A252983 - OEIS

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A252983 as a triangular array

											0
										0		0
									1		0		1
								3		1		1		3
							6		13		1		13		6
						10		41		33		33		41		10
					15		85		266		68		266		85		15
				21		145		851		1247		1247		851		145		21
			28		221		1836		8487		4657		8487		1836		221		28
		36		313		3221		27905		67537		67537		27905		3221		313		36
	45		421		5006		62977

A252983 as a square array

0	0	1	3	6	10	15	21	28	36	45
0	0	1	13	41	85	145	221	313	421
1	1	1	33	266	851	1836	3221	5006
3	13	33	68	1247	8487	27905	62977
6	41	266	1247	4657	67537
10	85	851	8487	67537
15	145	1836	27905
21	221	3221
28	313
36

A252983 as an upper right triangle

0	0	1	3	6	10	15	21	28	36	45
	0	0	1	13	41	85	145	221	313	421
		1	1	1	33	266	851	1836	3221	5006
			3	13	33	68	1247	8487	27905	62977
				6	41	266	1247	4657	67537
					10	85	851	8487	67537
						15	145	1836	27905
							21	221	3221
								28	313
									36